Determination of for aliphatic ketones from nuclear magnetic resonance chemical shift data
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چکیده
منابع مشابه
Nitrogen-15 nuclear magnetic resonance of aliphatic tripeptides.
The 15N chemical shifts of eight aliphatic tripeptides have been measured at the natural-abundance level. For a given tripeptide, the resonances of the COOH-terminal and NH2-terminal amino acids can be identified by measurements at low or high pH. The shifts of the NH2-terminal amino acid nitrogens are essentially independent of the amino acids in the rest of the peptide. The shifts of the othe...
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Relaxation processes induced by the antisymmetric part of the chemical shift anisotropy tensor (henceforth called anti-CSA) are usually neglected in NMR relaxation studies. It is shown here that anti-CSA components contribute to longitudinal relaxation rates of the indole (15)N nucleus in tryptophan in solution at different magnetic fields and temperatures. To determine the parameters of severa...
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Z. Naturforsch. 40 a, 126-130 (1985); received November 23, 1984 Dedicated to Professor Dr. Alarich Weiss on the occasion of his 60th birthday The angular dependence of the chemical shift of the Si nuclear magnetic resonance has been measured in a synthetic single crystal of Mg2Si04 (space group Pbnm, Z = 4). The measurements were performed at room temperature at a frequency of 39.758 MHz using...
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ژورنال
عنوان ژورنال: Canadian Journal of Chemistry
سال: 1970
ISSN: 0008-4042,1480-3291
DOI: 10.1139/v70-315